[go: up one dir, main page]

Search a number
-
+
25402434 = 2329145991
BaseRepresentation
bin110000011100…
…1110001000010
31202210120120220
41200321301002
523000334214
62304243510
7425626401
oct140716102
952716526
1025402434
1113380252
128610596
135355435
143533638
15236b9a9
hex1839c42

25402434 has 16 divisors (see below), whose sum is σ = 52557120. Its totient is φ = 8175440.

The previous prime is 25402417. The next prime is 25402439. The reversal of 25402434 is 43420452.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25402439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72822 + ... + 73169.

It is an arithmetic number, because the mean of its divisors is an integer number (3284820).

Almost surely, 225402434 is an apocalyptic number.

25402434 is an abundant number, since it is smaller than the sum of its proper divisors (27154686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25402434 is a wasteful number, since it uses less digits than its factorization.

25402434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146025.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 25402434 is about 5040.0827374161. The cubic root of 25402434 is about 293.9623951162.

Adding to 25402434 its reverse (43420452), we get a palindrome (68822886).

The spelling of 25402434 in words is "twenty-five million, four hundred two thousand, four hundred thirty-four".

Divisors: 1 2 3 6 29 58 87 174 145991 291982 437973 875946 4233739 8467478 12701217 25402434